Hanes Geo Components 48311 Insuloc Insulation Fabric, 4.5 by 300-Feet Primarily used for holding in blown insulation on walls and ceilings Can be used with cellulose or fiberglass insulation Lightweight and tear-resistant Can be used to tidy up sagging bats in crawl spaces, basements and garages Additional use as a multi-purpose fabric to protect hardwood floors, countertops, cabinets and furniture in construction and renovation areas